# Setup Sass Sass is an extension of CSS, adding nested rules, variables, mixins, selector inheritance, and more. In Gatsby, Sass code can be translated to well-formatted, standard CSS using the `gatsby-plugin-sass` plugin. This recipe: --- Installs necessary NPM packages. --- Installs the Emotion plugin in `gatsby-config.js`. --- Writes out an example stylesheet and page you can use to play with Sass. --- Read more about Sass on the official Sass docs site: https://sass-lang.com/documentationb